26-30 November 2018
Europe/Vienna timezone

Measurement of the charge asymmetry for the KS→πeν decay and test of CPT symmetry with the KLOE detector

27 Nov 2018, 15:10


Austrian Academy of Sciences, Dr.-Ignaz-Seipel-Platz 2, 1010 Vienna, AUSTRIA
Non-Invited Talk [1] T, C, P, CP and CPT symmetries Emergence of symmetries from entanglement


Antonio Di Domenico (Sapienza Universita e INFN, Roma I (IT))


Using 1.63 fb−1 of integrated luminosity collected by the KLOE experiment about 7 × 104 KS → π±e∓ν decays have been reconstructed. The measured value of the charge asymmetry for this decay is AS = (−4.9 ± 5.7stat ± 2.6syst) × 10−3, which is almost twice more precise than the previous KLOE result. The combination of these two measure- ments gives AS = (−3.8 ± 5.0stat ± 2.6syst) × 10−3 and, together with the asymmetry of the KL semileptonic decay, provides significant tests of the CPT symmetry. The obtained results are in agreement with CPT invariance.

Content of the contribution Experiment

Primary author

on behalf to KLOE-2 collaboration

Presentation Materials